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</div><hr /><div id="domdocument.savexml" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">DOMDocument::saveXML</h1>
  <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">DOMDocument::saveXML</span> &mdash; <span class="dc-title">
   Dumps the internal XML tree back into a string
  </span></p>

 </div>
 <div class="refsect1 description" id="refsect1-domdocument.savexml-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">string</span> <span class="methodname"><strong>DOMDocument::saveXML</strong></span>
    ([ <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <code class="parameter">$node</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code></span>
  ]] )</div>

  <p class="para rdfs-comment">
   Creates an XML document from the DOM representation. This function is usually 
   called after building a new dom document from scratch as in the example below. 
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-domdocument.savexml-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">node</code></em></dt>

     <dd>

      <p class="para">
       Use this parameter to output only a specific node without XML declaration
       rather than the entire document.
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">options</code></em></dt>

     <dd>

      <p class="para">
       Additional Options. Currently only <a href="libxml.constants.html" class="link">LIBXML_NOEMPTYTAG</a> is supported.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-domdocument.savexml-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the XML, or <strong><code>FALSE</code></strong> if an error occurred.
  </p>
 </div>

 <div class="refsect1 errors" id="refsect1-domdocument.savexml-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   <dl>

    
     <dt>
<strong><code>DOM_WRONG_DOCUMENT_ERR</code></strong></dt>

     <dd>

      <p class="para">
       Raised if <em><code class="parameter">node</code></em> is from another document.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-domdocument.savexml-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>5.1.0</td>
       <td>
        Added the <em><code class="parameter">options</code></em> parameter
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-domdocument.savexml-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-5298">
    <p><strong>Example #1 Saving a DOM tree into a string</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br />$doc&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">DOMDocument</span><span style="color: #007700">(</span><span style="color: #DD0000">'1.0'</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">//&nbsp;we&nbsp;want&nbsp;a&nbsp;nice&nbsp;output<br /></span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">formatOutput&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$root&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">createElement</span><span style="color: #007700">(</span><span style="color: #DD0000">'book'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$root&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">appendChild</span><span style="color: #007700">(</span><span style="color: #0000BB">$root</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$title&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">createElement</span><span style="color: #007700">(</span><span style="color: #DD0000">'title'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$title&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$root</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">appendChild</span><span style="color: #007700">(</span><span style="color: #0000BB">$title</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$text&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">createTextNode</span><span style="color: #007700">(</span><span style="color: #DD0000">'This&nbsp;is&nbsp;the&nbsp;title'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$text&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$title</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">appendChild</span><span style="color: #007700">(</span><span style="color: #0000BB">$text</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #DD0000">"Saving&nbsp;all&nbsp;the&nbsp;document:\n"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">saveXML</span><span style="color: #007700">()&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br />echo&nbsp;</span><span style="color: #DD0000">"Saving&nbsp;only&nbsp;the&nbsp;title&nbsp;part:\n"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">saveXML</span><span style="color: #007700">(</span><span style="color: #0000BB">$title</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Saving all the document:
&lt;?xml version=&quot;1.0&quot;?&gt;
&lt;book&gt;
  &lt;title&gt;This is the title&lt;/title&gt;
&lt;/book&gt;

Saving only the title part:
&lt;title&gt;This is the title&lt;/title&gt;
</pre></div>
    </div>
   </div>
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-domdocument.savexml-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="domdocument.save.html" class="methodname" rel="rdfs-seeAlso">DOMDocument::save()</a> - Dumps the internal XML tree back into a file</span></li>
    <li class="member"><span class="methodname"><a href="domdocument.load.html" class="methodname" rel="rdfs-seeAlso">DOMDocument::load()</a> - Load XML from a file</span></li>
    <li class="member"><span class="methodname"><a href="domdocument.loadxml.html" class="methodname" rel="rdfs-seeAlso">DOMDocument::loadXML()</a> - Load XML from a string</span></li>
   </ul>
  </p>
 </div>

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